Derrick.



F. S. LOVITT.

DERRICK.

APPLICATION man MAY29.*1913.

Patma Apr, 11, 1916.

2 SHEETSQSHEET I.

F. S. LOVITT.

DERRICK.

APPLICATION FILED MAY 29. 1913.

1, 178,865. Patented Apr. 11, 1916.

2 SHEETS-SHEET 2.

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7 ,I 2 \i aww/Wto@ raam s Levier, 9F savanna. assassina. Denman i. I A

1lb all whom :it may concern.'

Be a known that I, FRANK s. Laan, ai-

zen of the United States, residing atv Ravenna, in the county of Buffalo and State of Nebraska, vhave invented certain new and useful Improvements in Derricks, of which ther-following is a specification.

This invention relates to improvements in derricks, and the object thereof is first to provide a simple and cheap :device wherein the several frame parts may be easily diser connected for changing the location of the device, second, to provide a rotatable boom and support therefor whereby lthe article lifted'or elevated may be swung or rotated to any degree or angle of a complete circle to facilitate the loading and unloading of various ypes of vehicles or cars, and third, to provi e a derrick capable of being operated by a single person thus saving time'to a certain extent and materially reducing the v tending transverselyv of thetower` and'sup-- cost of labor.

The invention still further resides in the provision of a balanced rotatable boom wherein means is provided for supporting the same upon a rotatable stand or tower, the

latter having a drum or windlass mounted thereupon for operating ropes arranged over pulleys carried by the said boom.

The above and additional objects are accomplished by such means as are'illustrated in their preferred embodimentin the laccompanying drawings, described in the following specication'and then more particularly pointed out in the claim which is appended hereto and forms apart of this application.

In describing mv invention in detail reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views; and in which Figure 1 is a perspective view of a derrick constructed in accordance with Vmy invention illustrating the application thereof;.

Fig. 2 is a top plan view'; and Fig. 3 is a front elevation.

Before proceeding with the description of the drawings, I desire to call particular attention to the fact that while I have evolved my invention with particular reference to a hand operated device, the same may be readily utilized or employed in connection with any suitable source of motive power for greatly increasing the lifting power of the derrick. v

Referring now to the drawings, wherein SpecQat-ion 0f Letters APatent.

vInsalate,d Apr ,11, i916.l

apparati@ meamy as, 1913; serieu No. riesce.

is illustrated the preferred form of my invention the numeral l flgnates a base platek adapted to'be secured tothe' ground in any su1table manner,'the said plate being provided with a smooth upper face upon which 1s plvotally arranged by means of a pivot pin 2, an upright stand or tower, designated 1n Iits entirety by the numeral 3; The said tower comprises a base-plate 4 through which the pivot pin 2 extends and sides 5, the latter being converged upwardly from the said plate to Va suitable block 6 the latter adapted to receive a pivot lpin 7 depending from the converged extremity of vthe derrick frame portion 8. Brace beams 9 are arranged upon the tower 3 and extend from one to the other of thesides thereof and support the saidA sides in proper spaced relationl fora purpose to be hereinafter -fullv described. Secured to the tower sides 5 adjacent the diverged end thereof uI provide a "balanced boom 10 ex- `the oiltline or shape of the tower 3. A block 18 is interposed between the converged extremities of the boom 10 intowhich an eye la is screwed or otherwise secured, the said block also supporting a pulley 15v over which the guy rope 16 of the lderrick is arranged in a manner to subsequently appear. n Mounted between the tower sides near the base 4 thereof is a shaft 17, having a hand wheel 18 mounted upon one end thereof, the said wheel being arranged upon the exterior of the tower for winding or rotating theV shaft during the operation of the device. One end of the guy rope 16 is secured to the shaft, from'which polnt'the said rope extends upwardly and overa pulley 19 desides 5 from which point therope extends forwardly to the pulley 15 and downwardly therefrom'to a thirdpulley 20 over which it passes to extend to the eye 14 where it is permanently secured` By this arrangement pending from the boom 10 between the tower it will be seen that the said pulley 20 is raised or lowered according to the rotation of the shaft 17 and by providing the pulley 20 with a rope 21 for securing the article to be lifted or elevated, the desired result is accomplished. y

Uprights 22 arranged in spaced relation are disposed adjacent the tower 3 and are braced by suitable beams 23,A the said uprightshaving the extremities of the framel provided with a sharpened or pointed end adapted to bite into the base and thus prevent movement of the tower independent thereof. v

Having described in detail the construction of the device, it now remains to setA forth the operation of the same. After fastening the article to bel lifted to the pulley 2O by means of the rope 21, the windlass 17 isrrotated by means of the hand wheel 18 secured thereto, the winding or rotation of the said windlass causing the pulley 20 to be elevated by means of the rope 16 arranged thereover.V After elevating the article to the desired height theentire tower may be rotated upon the base 1 by means of the said handle 1S thus swinging the article to any degree or angle of a circledesired, thereby facilitating to a great extent the loading Y and unloading of cars, vehicles or the like,

by the use of a derrick constructed as above described.

In reduction to practice, I have found that the form of my invention, illustrated in the drawings and referred to in the above description, as the preferred embodiment, is the most efficient and practical; yet realiz- Ving that the conditions concurrent with the adoption of my device will necessarily vary, l desire to emphasize the fact that various minor changes in the details of construction,y proportion and arrangement of parts may be resorted to, when required, without sacrificing any of the advantages of my invention, as definedv in the appended claim.

Having thus fully described my invention,

what l claim as new and desire to secure by Letters Patent, is Y A derrick including a substantially V- shaped upright rotatable frame, a substantially V-shaped boom affixed to the frame, arigid connection between the boom and the frame at a point intermediate the ends of the former and adjacent the top of the latter, brace means for the boom secured at one end to the frame adjacent the diverged end thereof and at its opposite end to the converged end of the boom, the said brace means engaging with the top of the frame and with the diverged end of the boom, a brace beam for the upright frame, and a means attached to the converged end of the boom for raising andlowerng articles relatively thereto.

n testimony whereof aiiiX my signature in presence of two witnesses.

FRANK S. LOVITT.

Witnesses R. HfMA'rHEw, l MONTAGUE H. WoRLooK..

` Copies of this patent may he obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

